Bumping-post.



W l TNEFSES J. F. OCONNOH.

BUMPING. POST.

aPPLIGATION FILED NOV. 24. ms.

Patented Dec. 29, 1914.

3SHEETS SHEET L [NI 'ENTOR. Jo/m f 050/700 HZJ /1 TTORYE YT J. P. OCONNOR. Y

BUMPING POST.

APPLICATION FILED NOV. 24 1013.

Patented Dec. 29, 1914,

3 SHBETS-SHEBT 3.

JOHN F. OCONNOR, OF CHICAGO, ILLINOIS, ASSIG-NOR T WILLIAM H. MINER,

CHICAGO,

ILLINOIS.

BUMPING- POST.

Application filed November To all whom it may concern Be it known that I, Jonx F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Bumping-Posts, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in bumping posts.

Objects of the invention are to provide a bumping post of large capacity so constructed that it is extremely rigid and arranged to overcome any tendency of the shock absorbing device to be deflected from its proper position either sidewise, up or 4 down, when it is bumped by arailway car or locomotive; to provide a bumping post in which the shock absorbing device isreadily removable and interchangeable to facilitate repairs; and to provide a bumping post in which the shock absorbing device is mounted and freely movable within a hollow casing formed in a casting having bracing flanges extending laterally, downwardly, andrearwardly therefrom.

The invention furthermore consists in the 80 improvements in the parts and devices and in the novel combinations of the parts and devices as herein shown, described or 'claimed.

In the drawing forming a part of this specification, Figure 1 is a part side elevation, part section of the shock absorbing device employed in my "improved bumping 0st. Fig. 2'is a transverse, sectional view, the left half of which is taken on the line 22 of Fig. 1 and the other half of which is taken on the line 2 a of Fig. 1; Fig. 3 is a longitudinal, vertical, sectional v1ew showing the improved bumping post and the manner of anchoring the same to a concrete foundation .and its relation relatively to the track rails and Fig. 4 is an end View,

parts being in section, as the "bumping post is viewed from theline 4- 4 of Fig. 3.

In said drawing, the foundation to which the bumping post proper is anchoredis shown as comprised of a bed of concrete 10 having a plurality of longitudinally extending Lbeams 11 embedded therein, to the tops of which are secured'a plurality of transversely extending I-beams 12, the lat- Specification of Letters Patent.

Patented Dec. 29, 1914.

24, 1913. Serial No. 802,847.

ter being above the topv of the concrete. To strengthen and reinforce the concrete bed and hold the I-beams 11 in proper place,

a plurality of transversely extending chan= nels 13 are provided on the top of the concrete which are held in place by vertically extending bolts 14: which pass down through the concrete and through plates 15. Se cured to the ends of the transversely extending I-beams 12 by suitable angle plates 16 .are two vertically extending heavy plates 17 the forward edges of which are beveled, as shown at 18 in Fig. 3. To the tops of the I-beams 12 is secured a horizontal floor plate 19 and on the latter are mounted the track rails 20, see Fig. 4.

Secured to the plates 17 is a heavy casting A which, as shown, comprises a cylindrical casing 21 open at its front end, a horizontally and rearwardly extending thrust-resisting flange 22, laterally extending and upwardly inclined side flanges'23 on each side of the casing, a pair of down- \vardly extending, spaced, arcuate flanges 24, parallel securing side flanges 25 and vertical, diagonally disposed flanges 26. As will, be understood, all the flanges of the casting which extend to the plates 17 are securely riveted thereto.

The casing 21 has mounted therein a shock absorbing device designated generally by the reference B which is shown most clearly in Fig. 1. As shown in the drawing, the shock absorbing device B comprises a spring case 27 having a flange 28 at each end thereof and to each of which is secured by suitable bolts and nuts, a flanged friction shell 29 having an inner cylindrical friction surface 30. 'The spring. case 27 is cylindrical in general outline but is'shaped to conform to and to provide pockets for a plurality of circularly arranged sets of springs 31, each set comprising an outer heavy spring and a lighter spring nested therewithin, as shown most clearly in Fig. 2. A central set of {springs is provided within the circularly,arranged sets so that, as shown, there are seven 1 sets of springs adapted to take up the shock in the manner hereinafter described.

In each friction shell 29 there is mounted a set of three friction shoes 32 each having an outer arcuate friction face cooperable with the friction face 30 of the shell. friction shoe 32, on its'inner side, is provided with a wedging face 33 cooperable Each 7 with a correspondingly inclined wedge face 34 formed on a wedge 35, the latter'having three wedge faces 34 cooperating respec:

pression spring 38, the other endo'fflwhich seats against a spring cap 39 having a cylindrical portion 40 loosely slidable within the friction shell-and guided thereby. The two spring caps 39 are pressed away from each other by the sets of springs 31 within the .spring case and their outward movement is limited by circumferentially extending flanges 41, formed integrally therewith, which engage shoulders 42 formed -on-the inner ends of the friction shells 29, see Fig. 1. To hold the wedge, friction shoes and preliminary compression spring of each shock absorbing device in assembled posi tion, there'is provided a bolt 43 extending from each spring cap to its corresponding wedge. Each friction shell 29 is surrounded by a heavy ring 44 to preventbursting of the shell under the enormous radial pressure exerted thereon under buffing action. Each edge 35 is rovided at its outer end with.

an integral ollower-acting plate 45. The shock absorbing device B is placed within the casing 21, and as will be understood, is bodily slidable therein and so proportioned that one of the wedge members will engage. the rear inner wall 46 of the casing 21. and-the other wedge will extend out of the casing-21 and is arran ed at a height that the draw-bar or bu er of acar will engage therewith. At the outer end of the. casing 21 and on the interior thereof, is detachably secured by bolts or otherwise, a; retaining rin '47 to hold the shock absorbing device wit in the casing.

In operation, the shock resulting from a car or locomotive striking the bumping post will be partly taken up by the preliminary compression of the springs 38 and the friction created between the friction shoes and friction shells. and the final and heavier portionsof the shock'will be transmitted to the central sets of heavy sprin s 31 through the spring caps 39 which Wlll be engaged by the friction shoes 32 after the springs 38 have been fullycompressed. On account of the fact that the shock absorbing device is loosely mounted; within the casin 21, it is double acting;, -.wherebyit's ca ac ty is also doubled, so that the capacity 0 thebumping posh-"inactuah'pi'actice will be more than one .milli'o'npounds. I

:ljrom the 'precedingdescription, it will be seen that the casting A is so construpted that it provides an extremely rigid support "for the shock absorbing device and prevents the latter from being deflected out of proper position, which has been a tendency of bumping posts used hitherto. The foundation and anchoring members for the castin of the bumping post are also of very solid and substantial construction, thereby adapting the post to absorb extremely heavy shocks. easy to take out and repair or replace the shock absorbin device at any time.

Although I ave herein shown and described what I now'consider the preferred embodiment of my improvement, yet it will be understood. that various changes and modifications "may be made without departing from the spirit of the invention, and all such changes and modifications are contemplated as come within the scope of the claims appended hereto.

I claim The detachable ring 47 renders it 1. A bumping post including, in combination: stationary anchored members having a casting rigidly secured thereto, said casting having a hollow casing open at one end formed therein; and shock absorbing mechanism mounted in and held in proper operative position by said casing, substantially as specified.

.2. A bumping post including, in combination: stationary anchored members, having a casting rigidly secured thereto, said casting having a hollow casing and flanges extending laterally and rearwardly therefrom and secured to the stationary members to thereby brace the casing against lateral and thrust shocks; and shock absorbing mechanism mounted within saidcasing, substantially as specified.

3. In a bumping post, a shock absorbing device comprising .a spring'case, a friction shell at each end of said case, friction shoes and a wedge within each friction shell,

springs Within the spring case, and a mov able spring cap at each end of said springs adapted to be engaged by the friction shoes to compress said springs, substantially as specifie v 4. In a bumpmg post, a-shock absorbing device comprising a springcase, a friction shell at each end thereof, friction members v and main springs interposed between the shell, friction shoes, a wedge and preliminary compression spring at each end thereof friction shock absorbing means, sub t hall as specified.

G. A bumping post including; in combination: a casting mounted on stationaryanrhored plates, said vcasting having an in-' tograhliollow c'as11ig;,and a shock absorbingdevice bodily slidably mounted within said casing, substantially as specified.

l. bumping-post including, 111 combina- -tion: a casting mounted on stationary ancliorod plates, said casting havingan integral, hollow casing; and a shock absorbing device bodily slidably mounted'witliin said 'caslng, said shock absorbing device bemg double acting,substantially as specified.

8. A bumping post including,'in combina-.-

tion: a castingsecured to stationary cliored members, "Silld casting hav ng an 111 tegral hollow casing, and. downwardly, latorally and rearwardly extending flanges;

and a shock absorbing. device bodily slidably mounted within said casing, said 'de-, y

vice having aspring case, 'springs'mounted therewithin, a friction shell at each end of said spring case, and, cooperatin shoes and wedge within each fshe l, the innermost wedge. engaging the rear end of the casing within which the shock absorbing device ismounted and the other Wedge ex-.

beams embedded-therein, transversel'y'ex tending beams secured to the first named beams; plates on the top and bottom of said concrete and coimeoting bolts therefor, substantially asspecifie JOHN' F. o oo,NNoR. Witnesses I l CAnRIE G. RANZ,

LUCILLE HIGGINS.

friction 

